UNAVCO, Inc. is a nonprofit university-governed organization that supports and promotes Earth science, or other related fields of study, by advancing high-precision geodetic and strain techniques such as the Global Positioning System (GPS) or other related fields of study. Members are educational or nonprofit institutions chartered in the United States (US) or its Territories who are willing to make a clear and continuing commitment to active participation in the activities of the organization. Such activities include corporate governance and participation in decisions that affect the programs, facilities, and scientific mission of UNAVCO. Institutions that are engaged in research that advance the mission of UNAVCO, but that otherwise do not qualify for membership (e.g., non-US educational or research institutions), may be accepted for Associate Membership.